Chevy Camaro Subframe - Sublime Subframe

Putting The Resto Touch On A Camaro Front Clip

This freshly restored Camaro subframe is ready to be bolted back into a show-winning, first-generation F-body. It has certainly come a long way from its crusty, grimy, rusty beginnings (above right). Follow along and we'll show you how the crew at American Muscle Cars returned it to just-like-new condition.

In the realm of automotive rebuilds, nothing can top the bragging rights that come with performing a "frame-off restoration." But as much as we respect a ground-up rebuild effort, we should point out that the "frame-off" phrase is tossed around improperly by a large contingent of Chevy fans. Take early Camaro owners, for example. Their cars don't even have full frames, so how can they truly say that they've performed a "frame-off" resto? Technically speaking, a first-rate rebuild on a first-gen Camaro should be termed a "subframe-off" restoration.

Semantics aside, there's no better way to completely restore and properly detail your Camaro's chassis than to pull the front subframe off and rebuild it. This is a pretty involved procedure, but it's one that more and more enthusiasts are undertaking in order to make their Camaros as clean and detailed as possible. And while a lot of folks are improvising when it comes to re-assembling and detailing their subframes, we wanted to show how to put one back together in a manner consistent with what originally came off the assembly line. So we hooked up with the first-generation Camaro experts at American Muscle Cars for a lesson in by-the-book subframe restoration.

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To achieve the best result, the subframe is unbolted from the car and completely disassembled. Most of the components are then sent out to be media-blasted down to clean, bare metal. American Muscle Cars typically restores the subframe while the rest of the car is getting painted.

From a mechanical standpoint, restoring a Camaro subframe is pretty straightforward. It essentially involves replacing worn-out old parts (bushings, ball joints, steering box, etc.) with new or rebuilt components (most of which are available through American Muscle Cars). But what we wanted to concentrate on were the visual aspects, like proper paint colors and factory markings. So the AMC crew (Sal Perez, Ray Hagar, and Tim Warden) spent a couple of afternoons showing us the paints and procedures they use when restoring the subframes on their customers' cars.

Aside from a few components that are cadmium plated, two hues cover most parts on the subframe: semi-gloss black (AMC uses a PPG Delstar mix of 80 percent gloss black with 20 percent flattening agent) and cast-iron gray (they wouldn't disclose the PPG mix that they use, but did say that VHT's "Nu-Cast" gray is a good spray-can equivalent). Beyond that, the AMC crew goes so far as to duplicate the various inspection marks that assembly line workers used to show that they had examined assembled components and double-checked torque specifications. In fact, AMC sells a paint kit and instruction manual for do-it-yourselfers who want to duplicate these markings on their own cars. (While this story shows the inspection marks going on before the subframe components are assembled, most can also be applied once the parts are installed.)

As you might expect, there is some debate among restorers regarding the "most correct" way to detail certain subframe components. And since Camaros were built at more than one facility, there are bound to be a few minor discrepancies in production procedures. But experience and research has shown the craftsmen at American Muscle Cars that the following procedures and colors are accurate and correct for most first-generation Camaros. Check it out and see if the resto route is the way you want to go with your F-body subframe.

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Chevy Camaro Subframe - Sublime Subframe

This freshly restored Camaro subframe is ready to be bolted back into a show-winning, first-generation F-body. It has certainly come a long way from its crusty, grimy, rusty beginnings (above right). Follow along and we'll show you how the crew at American Muscle Cars returned it to just-like-new condition.

To achieve the best result, the subframe is unbolted from the car and completely disassembled. Most of the components are then sent out to be media-blasted down to clean, bare metal. American Muscle Cars typically restores the subframe while the rest of the car is getting painted.

The subframe, control arms, coil springs and transmission crossmember are all painted a semi-gloss black. For added durability, AMC primes the parts first, then uses a quality PPG Delstar paint (80 percent gloss black with 20 percent flattening agent) for the finish coat.

A lot of parts (spindles, steering arms, drag link, upper A-arm cross shafts, etc.) came from the factory bare or with a cast-iron gray coloring. AMC typically uses a special-mix PPG finish for these parts, but has also found that VHT's "Nu-Cast" gray spray paint offers a similar, accurate color.

Original Camaro shocks came with a "Delco Gray" finish that AMC also duplicates.

In the interest of originality, most of the factory fasteners (when present) are re-used. The bolt threads are taped off and the bolt heads bead blasted to give them a raw, natural finish. Matte clear paint protects the bolt heads from the elements.

For restorers who want to go the extra detailing mile, this undercarriage inspection marking kit is available through AMC. It includes the various paints, brushes and stamps needed to duplicate the assembly line inspection marks that the factory used when checking torque figures and other specifications. Detailed instructions show which marks (and colors) go where. Here we see the spindle markings going on (these would have originally indicated that the spindle assemblies were complete and the ball joints torqued) and a yellow dab of paint being applied to the end of the lower ball joint.

Here's a completed tie rod assembly. The tie rod ends are painted cast-iron gray, and the sleeve is bare steel protected by matte clear paint. Note the yellow inspection slash, which shows that the sleeve has been properly torqued.

Tim begins the subframe assembly by installing the upper A-arms (which have been fitted with new bushings and ball joints). Don't forget the upper A-arm bumpers.

Next comes the lower A-arm, coil spring, and spindle. It's imperative to use a coil spring compressor here.

Moving right along, Ray installs the rebuilt steering box and Pitman arm. The box and arm are both painted cast-iron gray, but the aluminum cover and bead-blasted bolt heads are left with a natural finish.

The idler arm assembly and drag link are both painted cast-iron gray. The drag link also gets a few inspection marks.

The steering arms, backing plates, and caliper brackets come next. The steering arms get a cast-iron gray finish, while the backing plates are silver-cadmium plated and the caliper brackets are gold-cadmium plated.

Here we see Ray installing the left tie rod assembly. Note the inspection mark on the steering arm.

After the Delco Gray paint has dried, the shocks get slid into place.

The brake rotors are machined and new bearings are installed, then the centers (the rough-cast portion) are sprayed with a high-temp, cast-iron gray finish.

After rebuilding this Camaro's original calipers, the AMC crew protects them using a semi-gloss black finish.

The brake line bracket is another piece that has been treated to gold-cadmium plating. The brake line is held in place with clips that have been bead-blasted and painted matte clear.

The finishing touch on this subframe is this heavy-duty sway bar (this one is not a factory piece, by the way) with standard rubber bushings. The frame bushing brackets are painted black, while the end link hardware should be left with a natural finish.

Sal Perez and Ray Hagar show off the result of their efforts-a like-new subframe that's ready to provide the foundation for an early Camaro. Special thanks also go out to Tim Warden for helping out with this project.

In September 2002, the last F-Body Chevy Camaro will roll off GM's assembly line. With no replacement plans to speak of, that means the F-Body is officially dead. May it rest in pieces. - Super Chevy Magazine » Read More